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Water Quality in the Caddo Lake Watershed Caddo Lake Water Quality Cypress Creek Clean Rivers Program.

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Presentation on theme: "Water Quality in the Caddo Lake Watershed Caddo Lake Water Quality Cypress Creek Clean Rivers Program."— Presentation transcript:

1 Water Quality in the Caddo Lake Watershed Caddo Lake Water Quality Cypress Creek Clean Rivers Program

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3 Monitoring Station Types Routine monitoring is used to follow trends and to identify water quality changes in the major watersheds. Systematic monitoring is a screening tool used to detect potential concerns. Typically placed on the smaller streams. Biological monitoring is a key factor. Special study monitoring projects are located and designed to address a specific concern.

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5 Water Quality Parameter Sets Field –Temperature –Dissolved Oxygen –Conductivity –pH –Secchi Depth Diel Sampling Conventional –Suspended Solids –Dissolved Solids Chloride Sulfate Hardness Alkalinity –Nutrients –Ammonia, Nitrate & Organic Nitrogen, Phosphorus –Chlorophyll –Bacteria

6 Other Sample Sets Metals in Water and in Sediment –aluminum, arsenic, chromium, copper, nickel, silver, zinc, barium, molybdenum, selenium, iron, and manganese Habitat & Biological –Fish & Macroinvertebrates (Benthics)

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10 Average Annual Inflow to Caddo Lake During 1979 – 2004

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13 Black Cypress Bayou Station pH Dissolved Oxygen (mg/l) Average 6.4 Average 7.0 Median 6.4 Median 6.6 Range (71) Range (72) Chlorophyll a g/l) Average 7.65Median 5.00 Range (65)

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15 DO 24HR Min DO 24HR MaxDO Range DO 24HR Average Station /18/ /24/ /21/ /06/ /04/ /08/ /03/ /08/ /11/ /19/ /13/ /06/ Average0.35.8

16 Nitrogen (mg/l) Station Nitrate + Nitrite Nitrate Average Median Range (26) (38) Ammonia TKN Average Median Range (65) (34)

17 Total Phosphorus (mg/l) Station Average Median Range (66) (25)

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25 Little Cypress Bayou Station pH Dissolved Oxygen (mg/l) Average Median Range (157) (154) Chlorophyll a g/l) Average 6.66Median 5.00 Range (65)

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27 DO 24HR Min DO 24HR MaxDO Range DO 24HR Average Station /2/ /3/ /4/ /2/ /1/ /4/ /3/ /24/ /25/ /13/ Average0.54.8

28 Nitrogen (mg/l) Station Nitrate + Nitrite Nitrate Average Median Range (68) (22) Ammonia TKN Average Median Range (122) (109)

29 Total Phosphorus (mg/l) Station Average Median Range (122) (20)

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